Carbureter for petrol-motors.



W. WINGFIBLD.

OARBURETER FOR PETROL MOTORS.

APPLIGATION- FILED 13110.16. I911.

Patented Feb. 4, 1-913.

To all may concern:

. strain being put upon the metallby tlie ad- .40

. T QFFICE.

WALTER wmermnn, 0F. namne, ENGLAND.

cannunnrnn For; PETROL-MOTORS.

Specification of Letters Patent.

Patented Feb. 4,1913.

Application filed December 16, 1911. Serial no. 666,201.

Be it known that I, \VALTER WINGFIELD, a-subject of the Kin -.-of'GreatBritain, residing at 60 Devonshire road,-Ealing, in the county ofMiddlesex, iiiIEngland, have invented new and useful Improvements inCarbureters for Petrol-Motors, of which-the following is aspecification.

.This' invention has-for, its object to provide-a carbureter that givesa constant mixtiire of gas that varies in volume whatever position thevthrottle valve may occupy, and

relates to that class 'of carburetor in which a quadrant attachedtoil-re body of a circular innershell valve is adapted to be at a eateror less distance from the petrol jet disposed beneath.

I The method of adjusting the petrol-jet by disposing a quadrant overits orifice and varyifig its distance therefrom is not new 1??- dse.Hitherto this quadrant has been formed with a fixed support at one endand an adjustable one at the other, so that the spring of the metalblade has been-relied upon to give a gradually increasing or de-' ableat either its rear'or forward end or at both, and that its surface isalways true, no

justment.

To more fully illustrate this invention reference is made to theaccompanying drawings in which Figure 1, 1s an elevation of my imprq edcarbureter on a small scale.- Fig. 2, 1s a front elevation of the valveand casing w1th cover removed showing the jet, and quadrant and methodof pivoting and fixing j same. Fig. 3, is a section through the valvecenter. Fig. 4, shows detail of a modification. Fig. 5, shows detail ofvalve.

In the drawing 1 is the valve casing having an inlet port 2,communicating with the hot air pipe and induction port 3 leading to theinduction trunk of theengine. The valve casing is circular and is openat one i sideor'both; inltheexample shown the casing is prov1ded withaflange 4 on the front side and has a detachable cover 5. J ournaled ina stub bush or socket 6, forming part; of cover 5 is a shaft 7. Thisshaft carries the circular valve 8 fast thereon, said valve'clos'eljifitting within the caselwhich is turned toreceive it. The valvedifidy orf shell 8 is ported as at 8 to correspond with the induction and airports of the casing 1.

The shaft 7'has a slot cut in its width as seenin Figs. 2, and 3, andwithin this is mounted the radius arm 10 of the quadrant.

The quadrant ll'may be in one piece with the arm 10, or be screwedthereto as shown in Fig. 2. -The quadrant 11 is of T section as shownand is adapted to lie above the jet as hereinafter more fully described.

The radius arm 10'is held within the slot by means of two pins 12 placedeccentrically on the setscrews 12 and 12 (see Fig. 3,) said pins beingpassed through elongated slots 13 and 13 respectively. The pin on screw.12 owing to its'engagement within'the transverse slot 13 is, on rotationof the screw 12, capable ofmovin the arm 10 up and down, the said armbeing alinedduring this operat on by -the', pin of screw 12 engaging thevertical slot 13; on the other hand pin or set 12 can move the arm 10angularly by reason of its engagement with vertical slot 13%-Diuririgthis operation the pin of screw 12 sets as a,pivot within slot13, allowing arm 10 'to move'radially. Hence by this means the pos on/ofthe quadrant 11 with regard to 'the et can be adjusted to a nicety." Inorder [70 lock the arm in .its adjusted position set screws 14: areem-.'

ployed, and so as to leave these adjustment,

and-setscrews in an accessible position a. detachable flanged plug 15 isscrewed into the socket 6. The .jet '16 is fittedinto the cored petrplpipe in a central position over the hot air intake. The valve shell 8has a hot airport 8,the form of the, port being preferably as shown inFig.- 5,"the 'part 8" being merely a pilot opening for slow running andarranged to come coincidentwith the. hot-air port when the quadraiftis'at its position nearest tothe sun-face: of the.

jet as shown in Fig. 2. As the valve opens the quadrant moves fartherfrom thejet until the valve is full open and the quadrant is at itsfarthest position.

Anextra cold air port 8 is provided and adapted-to become coincidentwith a slot supply as determined by the position of thequadrant 11. Theslot 8 admits of the valve body and spindle 7 being withdrawn over thepetrol jet, without disturbing the latter when the cover 5 is removed.

Suitable stops are provided to limit the travel of the valve within itsrange of movement, and the usual connections are made externallyforcontrol of the valve by disposing a lever on the spindle 7 or similarmeans. v

In Fig. 4, is shown an alternative arrangement in which adjustment ofthe quadrant ll is made by means of eyed adjustment screws 17 fitted 'over studs 18 and locked by nuts 19 on either side of lug orbracket 20,said lug being a projection from the radius sector 21, which lattercorresponds to the arm 10 of Fig. 2. The screw 3 is. screwed into thesector 21, and a slot is formed in the metal of the quadrant to allow ofradial movement.

Inoperation as the spindle is moved from zero the distance between thequadrant face in relation to the jet becomes greater, allow ing morepetrolto issue'and thereby keeping the mixture constant whatever thedemand of the engine may be. If the carbureter requires adjustment toobtain better results it"is only necessary to unscrew the plug 15 andalter the position of the screws 12 and 1%.

I claim -1. In combination in a carbureter, a hollow ported valve bodydisposed within an outer casing, a spindle supporting said valve body, aquadrant having a radius arm, a slot formed in said spindle and adaptedto receive the radius arm, and means for adjustably pivoting said arm insaid slot, whereby the position of said quadrant in relation to thepetrol jet may be regulated,

and a petrol jet, substantially as described.

2. In a carbureter, means for adjusting J the position of a chokingquadrant over a petrol jet consisting of slots disposed on the radiusarm and of eccentrically mounted pivoting pins adapted to. enter saidslots with set screws adapted to bear against said radius arm and retainsame'in its adjusted position, a petrol jet, a quadrant attached to thebody of a circular inner shell valve adapted to be at a greater or lessdistance from the petrol jet disposed beneath, subst'antially asdescribed.

WALTER WINGFIELD.

Witnesses:

C. P. LrnnoN, H, D. JAMESON.

